That's a false dichotomy. Similar to the false split between right and left brains, or the concepts of mind and body. All of these are one in the same. Geeks are nerds and vice versa. There is neither a left nor right side of the brain, just a brain. Our mind is our body, our body is our mind.

This is awesome. I will now keep in mind to tell people I'm a geek instead of a nerd. Thank you!

As for the "intuitive" nature of the "+–" mentioned by the first poster, the "+" is just what a URL-encoded space often looks like. The actual logic function is the "–". If you look at the parameters, you see "geek, –nerd". Replace the space in that with a "+" and you have exactly what you see in the URL!

"I'd say my geek and nerd friends and I have always thought of it the other way around. Nerds are the computer people, geeks are the scifi/fantasy people."

I'll second that! Although "computer geek" is probably used more often than "computer nerd" these days, I've always seen "nerd" as a more mathematical- and science-oriented person, and a "geek" (myself proudly included) as someone with a particular fringe interest, such as The LotR, role-playing, or a particular genre of films. Clearly, there is some interchangeability and overlap here. Perhaps a Venn diagram is in order! (Now that's nerdy!)